Grain door



March 7, 1933.

A. MAHANNAH GRAIN DOOR Filed Feb. 26 1931 2 Sheets-Sheet l` l Jl f/VVEA/TGZZ :22m Malzcmnalz i @w March 7, 1933. A. MAHANNAH GRA'IN DooR Filed Feb. 26, 1951 2 Sheets-Sheet 2 w/ md@ Ef/ QM `fvAjfvf/s/Tol Alm Maha/maz Z/M M Ibm Patented Mar. 7, 1933 UNITED `4STATES ALVA MAHANNAH,.0F snnsfwrcx, KANSAS y GRAIN :noo1t 5 Application filed February 26, 193 1. ..Seria1 No.. 518,357.

My invention relates to improvements in grain doors.

The object of my invention is to provide a removable grain door for box cars.

A further object of my invention is to provide a grain doorfor box cars that is pivotally or hingedly attached and rockable to the ceiling of a car, and means to lock thev same securely thereto.

A still further object of my invention is to provide a grain door hingedly connected to rock verticallyfand spring actuated as a counter balance tov assist the doors on the ceiling of the car.

A still further object of my invention is to provide a valve in the grain door and locking means for the closed position and locking means for the side jambs of the door' opening.

A still further object of my invention is to provide a. grain door divided horizontally and hingedly connected and means to lock the same in vertical alignment.

A still further object of my invention is to provide a valve having an outward extension to which piping will connect for thepurpose of unloading a number of cars filled with grain individually or simultaneously.

A still further object of my invention is to construct a door that will be grain tight, simple to operate and inexpensive with respectl to its detailed capacity.

These and other objects will hereinafter 35 be more fully explained, reference being had to the accompanying drawings which form a part of this specification, and in which like' parts will apply to like characters in the different views. Y

Referring to the drawings:

Fig. 1 is an outside view of a fragmentary portion of a box car, parts removed for convenience of illustration.

Fig. 2 is a sectional viewv taken on line 2 2 45 in Fig. 1.

Fig. 3 is a sectional view taken on line in Fig. 1.

Fig. 4 is an enlarged detail view of the supporting means for the doors when rocked to the ceiling of the box car.

Fig.' 5 is'an enlarged detailed frontfview of the valve.

Fig. 6 is a transverse view of Fig. 5.

Fig. 7 is an enlarged view of the cam slotted plate. f1? i 55 Fig. 8 is an 'enlargedplan view ofthe lever detent. t

Fig. `9 is an edge view of Fig. 8.

Fig. 10' Ais a diagram of a train of cars sep. aratelypositioned showing pipe connections. 30

Myinvention herein disclosed pertains to a grain door 1 having an upwardly extending reenforcing means 2 functioningv as a legy an'd'in' parallelismwith each end thereof, each v,leg being pivotally connected'to their 65 respective door'posts 3 thru vthe medium of bolts 14, byy which means the door may be rocked tothe ceiling 'of the box car at an approximate' position as shown by dotted'lines A, and-secured in thisposition by means of a ,0'

.lock bolt 5 slida'blyengaging in hangers 6' thatare securedI to the ceiling of the car, the

holt having a handle B positioned at right angles thereto and rockable therewith andv adaptedto engage on either side of the detent 7 to avoid longitudinal movement when the boltis placed at a desired position, there being one bolt for. each ofthe grain doors, there being two of the'` said doors oppositely e positioned in a box car such as commonly em- B0 ployed for grain.

, Y vAs armeans to counter balance or rock the doors to `a horizontal positioml have arranged a recoil spring 8 at each side thereof, the upper lend of which is attached to the 35 ceiling 9 as at 10 vin Fig. 3, the other end beingattached to a rod y1l that is secured tothe vdoorby an eye bolt 12 pivotally engaging therewith.

lPositioned between' the upper extending 90 leg elements 2 is an auxiliary door' 13 that is attached by-a plurality of hinges 14 to the v upper edge of the grain door proper and adapted .tov rock outward when released and f `beingsecured to a closed position by a latch L elementy 15 placed in working relation near each ofthe upper corners thereof; the said flatchesarrangedto slide vertically on aheadedbolt 16 engaging in an elongated slot 17 lin fthe vertical leg of the latch. Pivotally 100 65. adisc'cut-o to slidably engage in the slot,

attached to each side of the door is a pair of levers 18, the outer ends of which extend thru the leg of a reenforcing means 2 that is secured to the grain door near each end thereof, and a strap 19 on the inside of the grain door functioning as a back stop for the auxiliary door and coacting with the leg reenforcing means. ln working relation to the lever is a plate 2() imbedded in the door posts and having an elongated slantingly positioned slot therein as shown in Fig. 7 thel slot functioning as a cam for tight engagement of the opposite ends of the door against the door posts respectively.

Positioned on and secured to the door in working relation to each of the lever handles is a detent element 21, the said detents being resilient and having a notch arranged that the lever handle will seat in when the locks are disengaged, by which means the outer i ends are rocked inward to avoid contact with the jambs when the door is being closed. As a further reenforcing means for the said grain door, an angle iron 22 extends horizontally thereacross and a similar memi ber 23 at the bottom of the door and one at the top on the inside thereof as shown at 24.

Positioned in the door near the lower edge thereof is a valve structure consisting of a spout 25 having a flange 26 as securing means to the door, the spout has a slot therethru in close proximity to the flange in which slidably engages a cut off 27 that pivotally engages on the flange as at 28 and arranged to 4: rock upward as shown by dotted line C. Op-

positely positioned on the cut off with respect to the pivotal point thereof is a lip 29 as manipulating means for the rocking movement and when closed it is securely locked by a spring catch 30 positioned on the flange in working relation to the lip.

The valve being thus arranged is means to control the flow of grain thru the spout7 and the spout outwardly extending is adapted to receive a lateral 31 of a lead pipe 32,

the last said pipe being jointed to connect with a plurality of grain cars as shown in Fig. 1() by which means grain may be withdrawn by a pneumatic force from an individual car or a plurality thereof, or a single pipe may be arranged and connected to the spout for unloading grain contained yin the car, and such other modifications may be employed as lie within the scope of thel appen'ded claim, and having fully described my invention what l claim as new and desire to secure by Letters Patent isz- In a grain door valve of the class described, in combination with a removably arranged grain door for box cars, a valve carried by the door and consisting of a flange and spout integrally connected and outwardly extending and having a slot transversely positioned'v therein, a spring catch secured to the flange,

gage with the catch as locking means for the n closed position of the disc.

In testimony whereof l ax my signature.

ALVA MAHANNAH. 

